Tool rack



FIG. 1 is a top, front, and right side perspective view of a tool rack showing my new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image of that shown;

FIG. 3 is a front elevational view thereof; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a "tool rack", as shown and described. 